linux-kernel - Re: [PATCH 0/9] Input: synaptics-rmi4 - Bootloader v7/v8 firmware update improvements

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Message-ID: <76ef7f62cf3327e4c7fc4ff96c2978e8dfabff91.camel@redhat.com>
Date:   Thu, 22 Sep 2022 16:18:40 -0400
From:   Lyude Paul <lyude@...hat.com>
To:     Matthias Schiffer <matthias.schiffer@...tq-group.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/9] Input: synaptics-rmi4 - Bootloader v7/v8 firmware
 update improvements

Sorry this took me a little while to get to, but more sorry it took so long
for anyone to review this for you!

Anyway-luckily it seems I retained most of my RMI4 knowledge, so I was able to
follow along with the patch series pretty easily. I basically only had one
small comment about a missing Cc: stable@...r.kernel.org tag on one patch, but
the rest looks good to me:

Reviewed-by: Lyude Paul <lyude@...hat.com>

Feel free to poke me if you need my help getting anything else reviewed

On Wed, 2022-06-08 at 14:47 +0200, Matthias Schiffer wrote:
> This fixes the firmware update function with bootloader v8, allows to
> recover from interrupted updates with v7/v8, and does some code cleanup.
> 
> I believe that the code that allows to recover from a broken partition
> table is also necessary to make flashing a different partition table
> work at all, but I wasn't able to verify that, as I don't have any firmware
> images with different partition tables to test with. In any case, I'm
> pretty sure that it is working correctly now, as recovery from a mostly
> empty flash without partition table has been tested successfully.
> 
> I have only tested the new code with bootloader v8, and I don't have the
> documentation / interfacing guide for v7, so it would be great if anyone
> could check that I didn't break updates for v7.
> 
> 
> Matthias Schiffer (9):
>   Input: synaptics-rmi4 - fix firmware update operations with bootloader
>     v8
>   Input: synaptics-rmi4 - introduce rmi_f34v7_check_command_status()
>     helper
>   Input: synaptics-rmi4 - fix command completion check for bootloader
>     v7/v8
>   Input: synaptics-rmi4 - rewrite partition table unconditionally
>   Input: synaptics-rmi4 - reset after writing partition table
>   Input: synaptics-rmi4 - make rmi_f34v7_erase_all() use the "erase all"
>     command
>   Input: synaptics-rmi4 - remove unneeded struct register_offset
>   Input: synaptics-rmi4 - simplify rmi_f34v7_start_reflash()
>   Input: synaptics-rmi4 - drop useless gotos in rmi_f34v7_do_reflash()
> 
>  drivers/input/rmi4/rmi_f34.c   |  16 +-
>  drivers/input/rmi4/rmi_f34.h   |  17 --
>  drivers/input/rmi4/rmi_f34v7.c | 349 +++++++--------------------------
>  3 files changed, 81 insertions(+), 301 deletions(-)
> 

-- 
Cheers,
 Lyude Paul (she/her)
 Software Engineer at Red Hat